Fintech · Yuki

Stablecoin swaps and DEX pricing

Local-currency stablecoin swaps inside a mobile wallet, and an event-driven pricing library that quotes across dozens of exchanges from memory instead of hammering nodes.

Founder · CEO · Product lead

Swaps where people already are

Yuki built a swap experience for a popular mobile stablecoin wallet: move between dollar, euro, real and West African CFA stablecoins in a couple of taps, quoted and executed against an on-chain exchange. It brought local-currency stablecoins to people who already had the wallet in their pocket. Yuki's work in this ecosystem also extended to a naira-pegged stablecoin app.

Pricing without hammering nodes

To quote the best route across many decentralised exchanges, Yuki adapted an open-source, event-driven pricing library. Instead of asking a node for every pool's state on every quote, it loads state once, subscribes to on-chain events and keeps an in-memory copy, so prices come from memory and stay fresh. Calls that must hit the chain are batched. New exchanges plug in through a template with integration, event and end-to-end tests.

Why it matters

Fast, cheap quotes are the difference between a swap that feels instant and one that feels broken. Pricing from memory kept latency and infrastructure cost flat as the number of exchanges grew.

System

Wallet-as-a-service for African fintechs

One API that gives any fintech wallets, stablecoins, on/off ramps and KYC for its customers, normalising a patchwork of regional providers behind a single contract. 20,000+ requests a day.

WalletsStablecoinsAPIs

System

A settlement network for fiat ramps

Large ramp orders broadcast to many liquidity providers, split into fillable pieces and settled through escrow, so African Web3 businesses can move volumes no single provider can carry.

SettlementLiquidityOn/off ramps

Stablecoin swaps and DEX pricing

Swaps where people already are

Pricing without hammering nodes

Why it matters

Related systems

Wallet-as-a-service for African fintechs

A settlement network for fiat ramps

Swaps where people already are

Pricing without hammering nodes

Why it matters